MAXI J1848-015: The First Detection of Relativistically Moving Outflows from a Globular Cluster X-ray Binary
| Autor: | Bahramian, A., Tremou, E., Tetarenko, A. J., Miller-Jones, J. C. A., Fender, R. P., Corbel, S., Williams, D. R. A., Strader, J., Carotenuto, F., Salinas, R., Kennea, J. A., Motta, S. E., Woudt, P. A., Matthews, J. H., Russell, T. D. |
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| Rok vydání: | 2023 |
| Předmět: | |
| Druh dokumentu: | Working Paper |
| DOI: | 10.3847/2041-8213/accde1 |
| Popis: | Over the past decade, observations of relativistic outflows from outbursting X-ray binaries in the Galactic field have grown significantly. In this work, we present the first detection of moving and decelerating radio-emitting outflows from an X-ray binary in a globular cluster. MAXI J1848-015 is a recently discovered transient X-ray binary in the direction of the globular cluster GLIMPSE-C01. Using observations from the VLA, and a monitoring campaign with the MeerKAT observatory for 500 days, we model the motion of the outflows. This represents some of the most intensive, long-term coverage of relativistically moving X-ray binary outflows to date. We use the proper motions of the outflows from MAXI J1848-015 to constrain the component of the intrinsic jet speed along the line of sight, $\beta_\textrm{int} \cos \theta_\textrm{ejection}$, to be $=0.19\pm0.02$. Assuming it is located in GLIMPSE-C01, at 3.4 kpc, we determine the intrinsic jet speed, $\beta_\textrm{int}=0.79\pm0.07$, and the inclination angle to the line of sight, $\theta_\textrm{ejection}=76^\circ\pm2^{\circ}$. This makes the outflows from MAXI J1848-015 somewhat slower than those seen from many other known X-ray binaries. We also constrain the maximum distance to MAXI J1848-015 to be $4.3$ kpc. Lastly, we discuss the implications of our findings for the nature of the compact object in this system, finding that a black hole primary is a viable (but as-of-yet unconfirmed) explanation for the observed properties of MAXI J1848-015. If future data and/or analysis provide more conclusive evidence that MAXI J1848-015 indeed hosts a black hole, it would be the first black hole X-ray binary in outburst identified in a Galactic globular cluster. Comment: 14 pages, 5 figures, ApJL in press |
| Databáze: | arXiv |
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